package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * desc
 *
 * @author wkh
 * @date 2024/6/12 11:41
 */
@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishMapper dishMapper;

    //套餐分页查询
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    //新增套餐
    @Override
    @Transactional
    public void add(SetmealDTO setmealDTO) {
        //添加套餐表信息
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.add(setmeal);
        //添加套餐菜品关系表信息
        Long setmealId = setmeal.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes != null && !setmealDishes.isEmpty()) {
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealId);
                setmealDishMapper.add(setmealDish);
            });
        }
    }

    //批量删除套餐
    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断套餐是否处于起售状态
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            Integer status = setmeal.getStatus();
            if (status == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }

        //删除套餐表数据
        setmealMapper.deleteBatch(ids);

        //删除套餐菜品关系表数据
        ids.forEach(id -> {
            setmealDishMapper.deleteBySetmealId(id);
        });
    }

    // 根据id查询套餐
    @Override
    public SetmealVO getById(Long id) {
        //根据id查询套餐表
        Setmeal setmeal = setmealMapper.getById(id);
        if (setmeal != null) {
            //根据套餐id查询套餐菜品关系表
            List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);
            SetmealVO setmealVO = new SetmealVO();
            BeanUtils.copyProperties(setmeal, setmealVO);
            setmealVO.setSetmealDishes(setmealDishes);
            return setmealVO;
        }
        return null;
    }

    //修改套餐
    @Override
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        //修改套餐表
        setmealMapper.update(setmeal);
        //删除套餐菜品关系表
        setmealDishMapper.deleteBySetmealId(setmealDTO.getId());
        //添加套餐菜品关系表
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes != null && !setmealDishes.isEmpty()) {
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealDTO.getId());
                setmealDishMapper.add(setmealDish);
            });
        }
    }

    //修改套餐起售停售状态
    @Override
    public void startOrStop(Integer status, Long id) {
        List<SetmealDish> list = setmealDishMapper.getBySetmealId(id);
        if (list != null && !list.isEmpty()) {
            list.forEach(setmealDish -> {
                Long dishId = setmealDish.getDishId();
                Dish dish = dishMapper.getById(dishId);
                if (dish.getStatus() == StatusConstant.DISABLE) {
                    throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                }
            });
        }
        Setmeal setmeal = new Setmeal();
        setmeal.setStatus(status);
        setmeal.setId(id);
        setmealMapper.update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}

